Tool support



, 1935. v R. J. MEYER MN5? TOOL SUPPORT Filed Deo. 5, 1932 A'nunonnunnmmuuml v ATTORNEYS Patented Aug. 20, 1.935

- l -vltalpluifJ.:.Meyen.Henrichfiole.; Judith L.` Meyer adininistratrrix of said Ralph J.: vMeyer, de-l I ceased AApuma-mnLineair-ber,5, i932, serial No. 645,746 .Y

` Garnis# C1f-.255-51- i f.

`made of standard tubing and they are connected f This invention relatesl'toy columns'for the Vsupport of ,drilling-'tools insubterranean excavations, its primary object beingto'p'rovide VaA portable-de- 'vice'particularly adaptedgto holdga-'drilling-tool 5 during the 'operation thereof, .withut'the use of cumbersome .and complioated'bracings usually employedin appliances of-thistype.1;.f i;

" :Another objectof thel invention .is tof'provide la kcolumn of -thefaboveldescribed character, ilaving a tool .supportedthereon 1 i L A further object is to provideacolumn adapted for the-.support ofa'drilling-tool which, by reason of its simpleV construction, may be produced at little cost, is easily manipulated and placed in an operative position and owing to the absence of complicated parts, is durable and easily kept in order, and still other .objects reside in details of construction and a novel arrangement of parts as will be found in the course of the following de scription.

'y In the accompanying drawing, in which like reference characters designate. corresponding parts throughout the views,

Figure 1 represents the tool-Support in itsoperative position.

Figure 2 is a section taken on the line 2-2 of Figure 1. l

Figure 3 is a section taken on the line 33, Fig- Y ure 1.

Figure 4 is a section alongj the line 4-4 of Figure 3.

.Y Figure 5 is anr enlarged sectional View of an end-portionof the device. Figure 6 is a sectionon the lines 6-6 shown in Figuresl and 5'.

Figure 7 is a sectional elevation of the upper' Y The column I, upon which the tool is mounted, extends vertically at an end of a horizontal foot I 2 and is braced by a diagonal I3. The brace is preferably made of two straps riveted togethenas at I il, and bolted at its bfurcated ends to lugs I5 and I6 projecting `laterally from the column and the foot. Both the column and the foot are simple mechanismV for theY relative adjustment "of sion, is a standard I9 provided with a bifurcated head 2-for`the attachmentfof the'drill-tool.` The partsgI8 and I9, telescoping one-within the other,

` andwithin the column,provide'an extensionfor adjustment of fthe tool-"to any desired 4elevation Within the range ofextensionof `ther parts. i Inorder to .elevate the toolgtheextension-rnember I8has'externallyjarackI which is engaged .by apinionV 22 mountedfor rotation in afhousf ing 2.5 fastened eXteriorly of the column. Y

A friction brake for holdingl the pinion against rotation consists of a shoe 24 opposite the toothed 4 retrograde movement. An adjustable collar 29 on Y,

the standard I9 holds it in adjusted positions relative to the tubular extension-member I8.

The free end of the tubular foot is split lengthy wise, as at 30, and it has at opposite sides of the split, lugs 3| provided with alined openings fory of the lugs into a correspondingly screw-threaded opening ofthe other lug, and'it has in its head 33, a sliding rod 34 to facilitate its manual f rotation. Y

Vprojecting sharp-edged toe 36, providing a prong..

which, in practice, engages inf an undercut of the excavation, as shown in Figure l of the drawing.-

The extension is fastened in' its adjusted positions by means ofthe clamp-screw 33.. v

vAt a point remote from the outer extremity'of y v the shoe, a cross-member 3l which, at its ends, g

carries downwardly ranging spikes 38 to provide prongs which engage with the floor of the excavation. The cross-member, which like the foot and the column, ismade of standard tubing, ex- -tendsslidably through a. cross-tting 39 by which alined sections I 2a vand I 2c of the foot are rigidly connected. A set-screw 43 in a threaded opening of the cross-fitting 39, holds the cross-member in its adjusted positions. f

The. spikesk are fastened at the ends of the cross-member by Shanks extending ythrough apertures of the member, and nuts 4I screwed upon theA threaded ends of theA shanks. It is preferred to place the spikes slantingly rearwardly with relation to the breast of the yexcava` tion, engaged by the drilling-tool.

In the operation of the tool, thethree prongs projecting in opposite directions 'and engaging surfaces of the excavation in opposed planes, cooperate as anchoring meansrto hold the vcolumn -at the end of the foot, rigidly in an upright position, it being apparent that the three points of contact, in triangular formation, will anchor thecolumn against displacement in any direction.

By virtue of the adjustability of the cross-mer'nl: i berY and the extension of the foot, the support is readily adapted to be placed in :excavation`s-of\ different forms and dimensions, while the tele` scoping parts of the column, permit of placing the tool in any desired elevation within the lime its of the movement of said parts.

It is to be understood that vamnonsune! tails of construction may, be resorted to without deparing from the spirit 'and scope of the inven- I tion.

What I claim and Patent is: c Y

l. A tool-support comprising-a `column having means for. the support of a tool, a laterally; projectingfoot at the lower endrof the column; an

desire to secure by Letters upwardly projecting prong at an end ofthe foot,l

an adjustable cross-member on the foot, 'and downwardly ranging anchoringfmeans on the cross-member at opposite sides of the `foot. Y

2. A tool-support comprising a column having lopposite -sides of the foot..

means for the support of a'tool, a laterally-projecting foot at the lower end of the column, an upwardly projecting prong at an end of the foot,

' a cross-member on said foot between said prong and the column, downwardly ranging prongs on the cross-member at opposite sides of the foot,

' and means permitting lengthwise adjustment of the @mss-member; A toolfsupport comprisingl a longitudinally extensible column having means for the support 4. Atool-support comprising a column, a sup- .portel for'the column, anchoring means on the support, anv extension forvthe column including telescoping parts, one of which has means for the support,l ofa,-too1andVself-locking means cooperativewvith another oftheparts to mechanically elevate lthe tool-supporting:Dart v x15. A-to'ol-support comprising a column having means f or the support of a tool, a laterally projecting foots ait/fthe'Y lower end of the column, a

longitudinally adjustable extension at an end of thefootjan upwardlyv projecting prong at the endr -offsaid-ext'ension, across member on said foot between' said prong and the column, and down- 9 wardly rangingrprongs on the cross member Vat `RALPH J. MEYER. 

